package com.xingzhi.common.util;

import com.alibaba.druid.util.StringUtils;
import com.xingzhi.common.bean.DeviceInfo;
import eu.bitwalker.useragentutils.Browser;
import eu.bitwalker.useragentutils.OperatingSystem;
import eu.bitwalker.useragentutils.UserAgent;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

//import nl.bitwalker.useragentutils.Browser;
//import nl.bitwalker.useragentutils.OperatingSystem;
//import nl.bitwalker.useragentutils.UserAgent;

/**
 * Created by daniel.luo on 2018/6/26.
 */
public class IpUtil {
    public static String getIpAddr(HttpServletRequest request) {
        String ipAddress = null;
        try {
            ipAddress = request.getHeader("x-forwarded-for");
            if (StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getHeader("Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getHeader("WL-Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
                ipAddress = request.getRemoteAddr();
                if ("127.0.0.1".equals(ipAddress)) {
                    // 根据网卡取本机配置的IP
                    InetAddress inet = null;
                    try {
                        inet = InetAddress.getLocalHost();
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }
                    ipAddress = inet.getHostAddress();
                }
            }
            // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
            if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
                // = 15
                if (ipAddress.indexOf(",") > 0) {
                    ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                }
            }
        } catch (Exception e) {
            ipAddress = "unknown";
        }
        return ipAddress;
    }

    public static DeviceInfo getDeviceInfo(HttpServletRequest request) throws Exception {
        String ip = getIpAddr(request);
        String ua = request.getHeader("User-Agent");
        //转成UserAgent对象
        UserAgent userAgent = UserAgent.parseUserAgentString(ua);
        //获取浏览器信息
        Browser browser = userAgent.getBrowser();
        //获取系统信息
        OperatingSystem os = userAgent.getOperatingSystem();
        //系统名称
        String system = os.getName();
        //浏览器名称
        String browserName = browser.getName();
        System.out.println("ip : " + ip + ", " + request.getRequestURI());
        System.out.println("system : " + system + ", browser : " + browserName);
        return new DeviceInfo(ip, system, browserName);
    }
}